21795720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 128

約数和(自身を含む): 69984000

約数和(自身を除く): 48188280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 53, 60, 69, 92, 106, 115, 120, 138, 149, 159, 184, 212, 230, 265, 276, 298, 318, 345, 424, 447, 460, 530, 552, 596, 636, 690, 745, 795, 894, 920, 1060, 1192, 1219, 1272, 1380, 1490, 1590, 1788, 2120, 2235, 2438, 2760, 2980, 3180, 3427, 3576, 3657, 4470, 4876, 5960, 6095, 6360, 6854, 7314, 7897, 8940, 9752, 10281, 12190, 13708, 14628, 15794, 17135, 17880, 18285, 20562, 23691, 24380, 27416, 29256, 31588, 34270, 36570, 39485, 41124, 47382, 48760, 51405, 63176, 68540, 73140, 78970, 82248, 94764, 102810, 118455, 137080, 146280, 157940, 181631, 189528, 205620, 236910, 315880, 363262, 411240, 473820, 544893, 726524, 908155, 947640, 1089786, 1453048, 1816310, 2179572, 2724465, 3632620, 4359144, 5448930, 7265240, 10897860, 21795720]

約数ペア:

[(1, 21795720), (2, 10897860), (3, 7265240), (4, 5448930), (5, 4359144), (6, 3632620), (8, 2724465), (10, 2179572), (12, 1816310), (15, 1453048), (20, 1089786), (23, 947640), (24, 908155), (30, 726524), (40, 544893), (46, 473820), (53, 411240), (60, 363262), (69, 315880), (92, 236910), (106, 205620), (115, 189528), (120, 181631), (138, 157940), (149, 146280), (159, 137080), (184, 118455), (212, 102810), (230, 94764), (265, 82248), (276, 78970), (298, 73140), (318, 68540), (345, 63176), (424, 51405), (447, 48760), (460, 47382), (530, 41124), (552, 39485), (596, 36570), (636, 34270), (690, 31588), (745, 29256), (795, 27416), (894, 24380), (920, 23691), (1060, 20562), (1192, 18285), (1219, 17880), (1272, 17135), (1380, 15794), (1490, 14628), (1590, 13708), (1788, 12190), (2120, 10281), (2235, 9752), (2438, 8940), (2760, 7897), (2980, 7314), (3180, 6854), (3427, 6360), (3576, 6095), (3657, 5960), (4470, 4876)]